Fissile material Definition | Legal Glossary | LexisNexis
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GLOSSARY

Fissile material definition

Published by a LexisNexis Energy expert

What does Fissile material mean?

Any material fissionable by thermal (slow) neutrons. The three primary fissile materials are uranium-233, uranium-235, and plutonium-239. Although this term has sometimes been used as a synonym for fissionable material, it has now acquired this more restrictive meaning.

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